Iv. mechanical installation – Kistler-Morse KM ORB 4-20mA Input Box User Manual

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ORB180213 Rev. A

IV. MECHANICAL INSTALLATION

WARNING: REMOVE POWER FROM THE UNIT BEFORE INSTALLING REMOVING OR MAKING
ADJUSTMENTS.

CAUTION: DO NOT ROUTE SERIAL CABLES IN THE SAME CONDUIT WITH AC POWER CABLES.

Notes:

1. Mounting hardware is not supplied by factory

2. When mounting the 4-20 mA Input Box ensure there is enough clearance to open the front door
completely. Removal, insertion, and wiring of the modular PCB is done through the front of the unit.

WHEN SEALING CONDUIT CONNECTIONS, ONLY USE SIKAFLEX 1A POLYURETHANE SEALANT
OR DOW CORNING RTV 738 OR 739. OTHER SEALANTS MAY CONTAIN ACETIC ACID WHICH IS
HARMFUL TO SENSORS AND ELECTRONICS.

DRILLING HOLES IN THE ENCLOSURE

The standard fiberglass 4-20 mA NEMA 4X rated enclosure has no openings through which to route cables or
install the conduit. Hole location is critical for proper conduit installation. Check clearances to ensure that the
fittings and wire routing will not interfere with the PCB or enclosure door.

DO NOT DRILL HOLES THROUGH THE TOP OF ENCLOSURE AS THIS MAY ALLOW MOISTURE
SEEPAGE, WHICH CAN DAMAGE THE ELECTRONICS AND VOID THE WARRANTY.

PREPARE THE ENCLOSURE FOR CONDUIT

1. Open door of the 4-20 mA Input Box.

2. Remove all four (4) mounting screws that attach the board to the

enclosure.

3. Remove entire frame, and place in a safe location.

4. Make a separate hole for the AC cable, the serial and CAT 5 wiring. Holes

should be made in the front 2 inches of the bottom of the enclosure
(Figure 1); this allows for appropriate spacing for the ORB and cables.

5. Clean enclosure of any debris, replace the board back into the enclosure, using all four (4) mounting screws.

6. Determine desired location for mounting the unit.

TO MOUNT THE 4-20 MA INPUT BOx

1. Install feet to the 4-20 mA Input Box, tightening at the desired angles for mounting location.

2. Hold the enclosure against the wall in the desired location and mark the positions of the mounting holes.

Place the enclosure in a safe location.

3. Drill the mounting holes in the wall.

4. Attach the enclosure to the wall using hardware that will secure it firmly in place.

Figure 1. Bottom View